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Finding the Fourth Proportional to 139,592.59, 192,636.70 and 75,930.44

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Solution

The fourth proportional to 139,592.59, 192,636.70 and 75,930.44 is: 104,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,592.59 : 192,636.70 = 75,930.44 : x
  2. Step 2: Convert to fraction form
    139,592.59/192,636.70 = 75,930.44/x
  3. Step 3: Cross multiply
    139,592.59x = 192,636.70 × 75,930.44
  4. Step 4: Simplify right side
    139,592.59x = 14,626,988,238.14
  5. Step 5: Solve for x
    x = 14,626,988,238.14/139,592.59
  6. Step 6: Final answer
    x = 104,783.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.